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    <title>Document</title>
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<body class="dpflex">
    <header class="dpflex">
        <p>源码健身</p>
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    <!-- 倒计时 -->
    <div class="count-down" id="countBtn">
        <span id="countNum">5</span>s | 跳过
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    <p class="slogan">Never say die!</p>
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